The SPF Onion: Enter the World of SPF Chaos
Authors:
Ed Gibbs, Field CTO, WHOIS API Inc.
Jeff Vogelpohl, Outackle
Introduction
It was late in the evening on September 25, 2024, when I received a suspicious email in my personal inbox. It was cleverly disguised as a message from an insurance company I currently do business with, but something felt off—the usual company icon didn’t look quite right. Normally, I verify the sender by clicking on the icon to check the email address, but this time it wouldn’t pop up. Sensing something was amiss, I decided to dig deeper.